Abstract:
An elevator may include an elevator car, a counterweight, a set of hoisting ropes, and one or more rope pulleys. The car and counterweight may be suspended on the hoisting ropes. At least one rope pulley may include a solid surface including a plurality of rope grooves configured to receive at least one hoisting rope. Each rope groove may generally conform to a semi-circular shape and may include a groove bottom and sides. The at least one rope pulley may include a coating adhesively bonded to it. The coating may directly contact the at least one hoisting rope. A coating thickness may be less than or equal to about 3 mm. At the groove bottom of each rope groove, the coating thickness may be substantially less than half a thickness of the at least one hoisting rope. The coating may cover the groove bottom and sides of each rope groove.
Abstract:
An arrangement for equalizing rope force of an elevator may include: a hoisting machine, set of hoisting ropes, traction sheave, elevator car, guide rails, and compensating device. The hoisting machine may engage the hoisting ropes via the traction sheave. The elevator car may be at least partially supported by the hoisting ropes to move the elevator car. The elevator car may move along the guide rails. The compensating device may include first and second tensioning devices. The first tensioning device may be spaced apart from the second tensioning device. The first and second tensioning devices may be interconnected via a transmission device that transmits rotary motion. A first end of the set of hoisting ropes may be secured to a point in conjunction with the first tensioning device. A second end of the set of hoisting ropes may be secured to a point in conjunction with the second tensioning device.
Abstract:
An elevator may include an elevator car, counterweight, set of hoisting ropes, and one or more rope pulleys. The elevator car and counterweight may be suspended on the set of hoisting ropes. The one or more rope pulleys may be provided with one or more rope grooves. Each rope groove may have a groove bottom and groove sides. At least one rope pulley may have a coating adhesively bonded to it. At the groove bottom, a thickness of the coating may be at most about 3 mm. At the groove bottom, the thickness of the coating may be substantially less than half a thickness of the at least one hoisting rope running in the one or more rope grooves. At the groove sides, the thickness of the coating may be at most about 3 mm. The coating may be thicker at the groove bottom than at the groove sides.
Abstract:
Elevator, preferably an elevator without machine room. In the elevator, a hoisting machine engages a set of hoisting ropes by means of a traction sheave. The set of hoisting ropes comprises hoisting ropes of substantially circular cross-section. The hoisting ropes support a counterweight and an elevator car moving on their respective tracks. The hoisting rope has a thickness below 8 mm and/or the diameter of the traction sheave is smaller than 320 mm. The contact angle between the hoisting rope or hoisting ropes and the traction sheave is larger than 180°.
Abstract:
The conveyor of a travelator comprises a number of shafts and a number of mutually parallel endless belts. The conveyor comprises a number of conveyor modules successively connected to each other with a connecting section between them. The belts in the connecting section are arranged to be loosenable so that at least one shaft over which the belts to be loosened are passed is detachable so as to allow the conveyor modules to be released from each other. To release a conveyor module, at least one shaft on which the belt loops in the connecting section turn over is moved in relation to another shaft to slacken the belt loops. The shaft over which the loosened belt loops are passed is detached and removed from the belt loops. The detached conveyor module is removed for maintenance and/or replaced. In the assembly, a number of conveyor modules are provided, the conveyor modules are placed one after the other and connected to each other in the connecting section by belt loops and at least one detachably mounted shaft, which is placed in the belt loops in the connecting section. At least one of the shafts over which the belt loops in the connecting section are passed is moved to tighten the belt loops and to form a substantially continuous conveyor surface across the connecting section.
Abstract:
The invention relates to an arrangement for stopping an elevator car in an emergency braking situation, the elevator according to said arrangement comprising at least a hoisting machine (5) which has a traction sheave (6) fitted on its axle (10) and a brake (19) for braking the rotary motion of the axle (10), and an elevator car (1) suspended on a set of hoisting ropes (3) and adapted to be moved in a substantially vertical direction along guide rails (4) by means of the traction sheave (6) and the hoisting ropes (3). The traction sheave (6) is adapted to be rotated via a one-way clutch (26) or a corresponding element.
Abstract:
A travelator, moving ramp or escalator for transporting passengers, comprises a conveyor mounted on a frame that is supported on a fixed structure. The frame comprises a number of mutually identical profiled metallic bodies joined together end to end one after the other and containing coupling, supporting and/or guide elements integrated in the profiled metallic body of solid material.
Abstract:
A set of elevators, preferably an elevator group, may include a number of elevators without counterweight which have a common connection to a power supply. The elevators may have a common control system which contains an instruction to prevent an elevator having stopped at a floor from being dispatched upwards if, of the elevator cars of the other elevators connected to the same power supply, more cars are moving upwards than are moving downwards at the instant and/or within a set period of time. A method for controlling a set of elevators without counterweight connected to a common power supply may include monitoring to establish whether, at the instant and/or within a set period of time, the number of upwards moving elevator cars of the elevators in the set is larger than the number of downwards moving elevator cars of the elevators in the set.
Abstract:
An arrangement in drive machinery of a travelator, moving walkway, escalator or similar apparatus, includes at least a drive motor, at least one handrail with a handrail belt, a support element supporting the handrail and a drive belt connecting rotational movement of the drive motor to the support element. The support element comprises a supporting wheel, having a rim and adapted for use by the drive belt which is fitted to the rim of the support element.
Abstract:
A people mover, such as a travelator, moving ramp or escalator, comprises a conveyor. The conveyor comprises a frame having a first frame part secured to a fixed structure, and a second frame part mounted to be movable in relation to the first frame part in the longitudinal direction. The first and second frame parts are arranged one after the other. Transport platforms are secured to a first drive element and a second drive element. The drive elements are endless elements. A first tensioning device tensions the first drive element and a second tensioning device tensions the second drive element. Each tensioning device acts between the first frame part and the second frame part. The conveyor additionally comprises mechanical transmission elements between the first and second tensioning devices for keeping the stroke lengths of the first and the second tensioning movements equal.